1/****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19/****************************************************************************** 20 * 21 * This file contains L2CAP internal definitions 22 * 23 ******************************************************************************/ 24#ifndef L2C_INT_H 25#define L2C_INT_H 26 27#include <stdbool.h> 28 29#include "osi/include/alarm.h" 30#include "osi/include/fixed_queue.h" 31#include "osi/include/list.h" 32#include "btm_api.h" 33#include "bt_common.h" 34#include "l2c_api.h" 35#include "l2cdefs.h" 36 37#define L2CAP_MIN_MTU 48 /* Minimum acceptable MTU is 48 bytes */ 38 39/* LE credit based L2CAP connection parameters */ 40#define L2CAP_LE_MIN_MTU 23 41#define L2CAP_LE_MIN_MPS 23 42#define L2CAP_LE_MAX_MPS 65533 43#define L2CAP_LE_MIN_CREDIT 0 44#define L2CAP_LE_MAX_CREDIT 65535 45#define L2CAP_LE_DEFAULT_MTU 512 46#define L2CAP_LE_DEFAULT_MPS 23 47#define L2CAP_LE_DEFAULT_CREDIT 1 48 49/* 50 * Timeout values (in milliseconds). 51 */ 52#define L2CAP_LINK_ROLE_SWITCH_TIMEOUT_MS (10 * 1000) /* 10 seconds */ 53#define L2CAP_LINK_CONNECT_TIMEOUT_MS (60 * 1000) /* 30 seconds */ 54#define L2CAP_LINK_CONNECT_EXT_TIMEOUT_MS (120 * 1000) /* 120 seconds */ 55#define L2CAP_ECHO_RSP_TIMEOUT_MS (30 * 1000) /* 30 seconds */ 56#define L2CAP_LINK_FLOW_CONTROL_TIMEOUT_MS (2 * 1000) /* 2 seconds */ 57#define L2CAP_LINK_DISCONNECT_TIMEOUT_MS (30 * 1000) /* 30 seconds */ 58#define L2CAP_CHNL_CONNECT_TIMEOUT_MS (60 * 1000) /* 60 seconds */ 59#define L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS (120 * 1000) /* 120 seconds */ 60#define L2CAP_CHNL_CFG_TIMEOUT_MS (30 * 1000) /* 30 seconds */ 61#define L2CAP_CHNL_DISCONNECT_TIMEOUT_MS (10 * 1000) /* 10 seconds */ 62#define L2CAP_DELAY_CHECK_SM4_TIMEOUT_MS (2 * 1000) /* 2 seconds */ 63#define L2CAP_WAIT_INFO_RSP_TIMEOUT_MS (3 * 1000) /* 3 seconds */ 64#define L2CAP_BLE_LINK_CONNECT_TIMEOUT_MS (30 * 1000) /* 30 seconds */ 65#define L2CAP_FCR_ACK_TIMEOUT_MS 200 /* 200 milliseconds */ 66 67/* Define the possible L2CAP channel states. The names of 68** the states may seem a bit strange, but they are taken from 69** the Bluetooth specification. 70*/ 71typedef enum 72{ 73 CST_CLOSED, /* Channel is in closed state */ 74 CST_ORIG_W4_SEC_COMP, /* Originator waits security clearence */ 75 CST_TERM_W4_SEC_COMP, /* Acceptor waits security clearence */ 76 CST_W4_L2CAP_CONNECT_RSP, /* Waiting for peer conenct response */ 77 CST_W4_L2CA_CONNECT_RSP, /* Waiting for upper layer connect rsp */ 78 CST_CONFIG, /* Negotiating configuration */ 79 CST_OPEN, /* Data transfer state */ 80 CST_W4_L2CAP_DISCONNECT_RSP, /* Waiting for peer disconnect rsp */ 81 CST_W4_L2CA_DISCONNECT_RSP /* Waiting for upper layer disc rsp */ 82} tL2C_CHNL_STATE; 83 84/* Define the possible L2CAP link states 85*/ 86typedef enum 87{ 88 LST_DISCONNECTED, 89 LST_CONNECT_HOLDING, 90 LST_CONNECTING_WAIT_SWITCH, 91 LST_CONNECTING, 92 LST_CONNECTED, 93 LST_DISCONNECTING 94} tL2C_LINK_STATE; 95 96 97 98/* Define input events to the L2CAP link and channel state machines. The names 99** of the events may seem a bit strange, but they are taken from 100** the Bluetooth specification. 101*/ 102#define L2CEVT_LP_CONNECT_CFM 0 /* Lower layer connect confirm */ 103#define L2CEVT_LP_CONNECT_CFM_NEG 1 /* Lower layer connect confirm (failed) */ 104#define L2CEVT_LP_CONNECT_IND 2 /* Lower layer connect indication */ 105#define L2CEVT_LP_DISCONNECT_IND 3 /* Lower layer disconnect indication */ 106#define L2CEVT_LP_QOS_CFM 4 /* Lower layer QOS confirmation */ 107#define L2CEVT_LP_QOS_CFM_NEG 5 /* Lower layer QOS confirmation (failed)*/ 108#define L2CEVT_LP_QOS_VIOLATION_IND 6 /* Lower layer QOS violation indication */ 109 110#define L2CEVT_SEC_COMP 7 /* Security cleared successfully */ 111#define L2CEVT_SEC_COMP_NEG 8 /* Security procedure failed */ 112 113#define L2CEVT_L2CAP_CONNECT_REQ 10 /* Peer connection request */ 114#define L2CEVT_L2CAP_CONNECT_RSP 11 /* Peer connection response */ 115#define L2CEVT_L2CAP_CONNECT_RSP_PND 12 /* Peer connection response pending */ 116#define L2CEVT_L2CAP_CONNECT_RSP_NEG 13 /* Peer connection response (failed) */ 117#define L2CEVT_L2CAP_CONFIG_REQ 14 /* Peer configuration request */ 118#define L2CEVT_L2CAP_CONFIG_RSP 15 /* Peer configuration response */ 119#define L2CEVT_L2CAP_CONFIG_RSP_NEG 16 /* Peer configuration response (failed) */ 120#define L2CEVT_L2CAP_DISCONNECT_REQ 17 /* Peer disconnect request */ 121#define L2CEVT_L2CAP_DISCONNECT_RSP 18 /* Peer disconnect response */ 122#define L2CEVT_L2CAP_INFO_RSP 19 /* Peer information response */ 123#define L2CEVT_L2CAP_DATA 20 /* Peer data */ 124 125#define L2CEVT_L2CA_CONNECT_REQ 21 /* Upper layer connect request */ 126#define L2CEVT_L2CA_CONNECT_RSP 22 /* Upper layer connect response */ 127#define L2CEVT_L2CA_CONNECT_RSP_NEG 23 /* Upper layer connect response (failed)*/ 128#define L2CEVT_L2CA_CONFIG_REQ 24 /* Upper layer config request */ 129#define L2CEVT_L2CA_CONFIG_RSP 25 /* Upper layer config response */ 130#define L2CEVT_L2CA_CONFIG_RSP_NEG 26 /* Upper layer config response (failed) */ 131#define L2CEVT_L2CA_DISCONNECT_REQ 27 /* Upper layer disconnect request */ 132#define L2CEVT_L2CA_DISCONNECT_RSP 28 /* Upper layer disconnect response */ 133#define L2CEVT_L2CA_DATA_READ 29 /* Upper layer data read */ 134#define L2CEVT_L2CA_DATA_WRITE 30 /* Upper layer data write */ 135#define L2CEVT_L2CA_FLUSH_REQ 31 /* Upper layer flush */ 136 137#define L2CEVT_TIMEOUT 32 /* Timeout */ 138#define L2CEVT_SEC_RE_SEND_CMD 33 /* btm_sec has enough info to proceed */ 139 140#define L2CEVT_ACK_TIMEOUT 34 /* RR delay timeout */ 141 142#define L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT 35 /* Upper layer credit packet */ 143#define L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT 36 /* Peer credit packet */ 144 145/* Bitmask to skip over Broadcom feature reserved (ID) to avoid sending two 146 successive ID values, '0' id only or both */ 147#define L2CAP_ADJ_BRCM_ID 0x1 148#define L2CAP_ADJ_ZERO_ID 0x2 149#define L2CAP_ADJ_ID 0x3 150 151/* Return values for l2cu_process_peer_cfg_req() */ 152#define L2CAP_PEER_CFG_UNACCEPTABLE 0 153#define L2CAP_PEER_CFG_OK 1 154#define L2CAP_PEER_CFG_DISCONNECT 2 155 156/* eL2CAP option constants */ 157#define L2CAP_MIN_RETRANS_TOUT 2000 /* Min retransmission timeout if no flush timeout or PBF */ 158#define L2CAP_MIN_MONITOR_TOUT 12000 /* Min monitor timeout if no flush timeout or PBF */ 159 160#define L2CAP_MAX_FCR_CFG_TRIES 2 /* Config attempts before disconnecting */ 161 162typedef uint8_t tL2C_BLE_FIXED_CHNLS_MASK; 163 164typedef struct 165{ 166 UINT8 next_tx_seq; /* Next sequence number to be Tx'ed */ 167 UINT8 last_rx_ack; /* Last sequence number ack'ed by the peer */ 168 UINT8 next_seq_expected; /* Next peer sequence number expected */ 169 UINT8 last_ack_sent; /* Last peer sequence number ack'ed */ 170 UINT8 num_tries; /* Number of retries to send a packet */ 171 UINT8 max_held_acks; /* Max acks we can hold before sending */ 172 173 BOOLEAN remote_busy; /* TRUE if peer has flowed us off */ 174 BOOLEAN local_busy; /* TRUE if we have flowed off the peer */ 175 176 BOOLEAN rej_sent; /* Reject was sent */ 177 BOOLEAN srej_sent; /* Selective Reject was sent */ 178 BOOLEAN wait_ack; /* Transmitter is waiting ack (poll sent) */ 179 BOOLEAN rej_after_srej; /* Send a REJ when SREJ clears */ 180 181 BOOLEAN send_f_rsp; /* We need to send an F-bit response */ 182 183 UINT16 rx_sdu_len; /* Length of the SDU being received */ 184 BT_HDR *p_rx_sdu; /* Buffer holding the SDU being received */ 185 fixed_queue_t *waiting_for_ack_q; /* Buffers sent and waiting for peer to ack */ 186 fixed_queue_t *srej_rcv_hold_q; /* Buffers rcvd but held pending SREJ rsp */ 187 fixed_queue_t *retrans_q; /* Buffers being retransmitted */ 188 189 alarm_t *ack_timer; /* Timer delaying RR */ 190 alarm_t *mon_retrans_timer; /* Timer Monitor or Retransmission */ 191 192#if (L2CAP_ERTM_STATS == TRUE) 193 UINT32 connect_tick_count; /* Time channel was established */ 194 UINT32 ertm_pkt_counts[2]; /* Packets sent and received */ 195 UINT32 ertm_byte_counts[2]; /* Bytes sent and received */ 196 UINT32 s_frames_sent[4]; /* S-frames sent (RR, REJ, RNR, SREJ) */ 197 UINT32 s_frames_rcvd[4]; /* S-frames rcvd (RR, REJ, RNR, SREJ) */ 198 UINT32 xmit_window_closed; /* # of times the xmit window was closed */ 199 UINT32 controller_idle; /* # of times less than 2 packets in controller */ 200 /* when the xmit window was closed */ 201 UINT32 pkts_retransmitted; /* # of packets that were retransmitted */ 202 UINT32 retrans_touts; /* # of retransmission timouts */ 203 UINT32 xmit_ack_touts; /* # of xmit ack timouts */ 204 205#define L2CAP_ERTM_STATS_NUM_AVG 10 206#define L2CAP_ERTM_STATS_AVG_NUM_SAMPLES 100 207 UINT32 ack_delay_avg_count; 208 UINT32 ack_delay_avg_index; 209 UINT32 throughput_start; 210 UINT32 throughput[L2CAP_ERTM_STATS_NUM_AVG]; 211 UINT32 ack_delay_avg[L2CAP_ERTM_STATS_NUM_AVG]; 212 UINT32 ack_delay_min[L2CAP_ERTM_STATS_NUM_AVG]; 213 UINT32 ack_delay_max[L2CAP_ERTM_STATS_NUM_AVG]; 214 UINT32 ack_q_count_avg[L2CAP_ERTM_STATS_NUM_AVG]; 215 UINT32 ack_q_count_min[L2CAP_ERTM_STATS_NUM_AVG]; 216 UINT32 ack_q_count_max[L2CAP_ERTM_STATS_NUM_AVG]; 217#endif 218} tL2C_FCRB; 219 220 221/* Define a registration control block. Every application (e.g. RFCOMM, SDP, 222** TCS etc) that registers with L2CAP is assigned one of these. 223*/ 224#if (L2CAP_UCD_INCLUDED == TRUE) 225#define L2C_UCD_RCB_ID 0x00 226#define L2C_UCD_STATE_UNUSED 0x00 227#define L2C_UCD_STATE_W4_DATA 0x01 228#define L2C_UCD_STATE_W4_RECEPTION 0x02 229#define L2C_UCD_STATE_W4_MTU 0x04 230 231typedef struct 232{ 233 UINT8 state; 234 tL2CAP_UCD_CB_INFO cb_info; 235} tL2C_UCD_REG; 236#endif 237 238typedef struct 239{ 240 BOOLEAN in_use; 241 UINT16 psm; 242 UINT16 real_psm; /* This may be a dummy RCB for an o/b connection but */ 243 /* this is the real PSM that we need to connect to */ 244#if (L2CAP_UCD_INCLUDED == TRUE) 245 tL2C_UCD_REG ucd; 246#endif 247 248 tL2CAP_APPL_INFO api; 249} tL2C_RCB; 250 251 252#ifndef L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA 253#define L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA 100 254#endif 255 256typedef void (tL2CAP_SEC_CBACK) (BD_ADDR bd_addr, tBT_TRANSPORT trasnport, 257 void *p_ref_data, tBTM_STATUS result); 258 259typedef struct 260{ 261 UINT16 psm; 262 tBT_TRANSPORT transport; 263 BOOLEAN is_originator; 264 tL2CAP_SEC_CBACK *p_callback; 265 void *p_ref_data; 266}tL2CAP_SEC_DATA; 267 268/* Define a channel control block (CCB). There may be many channel control blocks 269** between the same two Bluetooth devices (i.e. on the same link). 270** Each CCB has unique local and remote CIDs. All channel control blocks on 271** the same physical link and are chained together. 272*/ 273typedef struct t_l2c_ccb 274{ 275 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 276 tL2C_CHNL_STATE chnl_state; /* Channel state */ 277 tL2CAP_LE_CFG_INFO local_conn_cfg; /* Our config for ble conn oriented channel */ 278 tL2CAP_LE_CFG_INFO peer_conn_cfg; /* Peer device config ble conn oriented channel */ 279 BOOLEAN is_first_seg; /* Dtermine whether the received packet is the first segment or not */ 280 BT_HDR* ble_sdu; /* Buffer for storing unassembled sdu*/ 281 UINT16 ble_sdu_length; /* Length of unassembled sdu length*/ 282 struct t_l2c_ccb *p_next_ccb; /* Next CCB in the chain */ 283 struct t_l2c_ccb *p_prev_ccb; /* Previous CCB in the chain */ 284 struct t_l2c_linkcb *p_lcb; /* Link this CCB is assigned to */ 285 286 UINT16 local_cid; /* Local CID */ 287 UINT16 remote_cid; /* Remote CID */ 288 289 alarm_t *l2c_ccb_timer; /* CCB Timer Entry */ 290 291 tL2C_RCB *p_rcb; /* Registration CB for this Channel */ 292 bool should_free_rcb; /* True if RCB was allocated on the heap */ 293 294#define IB_CFG_DONE 0x01 295#define OB_CFG_DONE 0x02 296#define RECONFIG_FLAG 0x04 /* True after initial configuration */ 297#define CFG_DONE_MASK (IB_CFG_DONE | OB_CFG_DONE) 298 299 UINT8 config_done; /* Configuration flag word */ 300 UINT8 local_id; /* Transaction ID for local trans */ 301 UINT8 remote_id; /* Transaction ID for local */ 302 303#define CCB_FLAG_NO_RETRY 0x01 /* no more retry */ 304#define CCB_FLAG_SENT_PENDING 0x02 /* already sent pending response */ 305 UINT8 flags; 306 307 tL2CAP_CFG_INFO our_cfg; /* Our saved configuration options */ 308 tL2CAP_CH_CFG_BITS peer_cfg_bits; /* Store what peer wants to configure */ 309 tL2CAP_CFG_INFO peer_cfg; /* Peer's saved configuration options */ 310 311 fixed_queue_t *xmit_hold_q; /* Transmit data hold queue */ 312 BOOLEAN cong_sent; /* Set when congested status sent */ 313 UINT16 buff_quota; /* Buffer quota before sending congestion */ 314 315 tL2CAP_CHNL_PRIORITY ccb_priority; /* Channel priority */ 316 tL2CAP_CHNL_DATA_RATE tx_data_rate; /* Channel Tx data rate */ 317 tL2CAP_CHNL_DATA_RATE rx_data_rate; /* Channel Rx data rate */ 318 319 /* Fields used for eL2CAP */ 320 tL2CAP_ERTM_INFO ertm_info; 321 tL2C_FCRB fcrb; 322 UINT16 tx_mps; /* TX MPS adjusted based on current controller */ 323 UINT16 max_rx_mtu; 324 UINT8 fcr_cfg_tries; /* Max number of negotiation attempts */ 325 BOOLEAN peer_cfg_already_rejected; /* If mode rejected once, set to TRUE */ 326 BOOLEAN out_cfg_fcr_present; /* TRUE if cfg response shoulkd include fcr options */ 327 328#define L2CAP_CFG_FCS_OUR 0x01 /* Our desired config FCS option */ 329#define L2CAP_CFG_FCS_PEER 0x02 /* Peer's desired config FCS option */ 330#define L2CAP_BYPASS_FCS (L2CAP_CFG_FCS_OUR | L2CAP_CFG_FCS_PEER) 331 UINT8 bypass_fcs; 332 333#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 334 BOOLEAN is_flushable; /* TRUE if channel is flushable */ 335#endif 336 337#if (L2CAP_NUM_FIXED_CHNLS > 0) || (L2CAP_UCD_INCLUDED == TRUE) 338 UINT16 fixed_chnl_idle_tout; /* Idle timeout to use for the fixed channel */ 339#endif 340 UINT16 tx_data_len; 341} tL2C_CCB; 342 343/*********************************************************************** 344** Define a queue of linked CCBs. 345*/ 346typedef struct 347{ 348 tL2C_CCB *p_first_ccb; /* The first channel in this queue */ 349 tL2C_CCB *p_last_ccb; /* The last channel in this queue */ 350} tL2C_CCB_Q; 351 352#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 353 354/* Round-Robin service for the same priority channels */ 355#define L2CAP_NUM_CHNL_PRIORITY 3 /* Total number of priority group (high, medium, low)*/ 356#define L2CAP_CHNL_PRIORITY_WEIGHT 5 /* weight per priority for burst transmission quota */ 357#define L2CAP_GET_PRIORITY_QUOTA(pri) ((L2CAP_NUM_CHNL_PRIORITY - (pri)) * L2CAP_CHNL_PRIORITY_WEIGHT) 358 359/* CCBs within the same LCB are served in round robin with priority */ 360/* It will make sure that low priority channel (for example, HF signaling on RFCOMM) */ 361/* can be sent to headset even if higher priority channel (for example, AV media channel) */ 362/* is congested. */ 363 364typedef struct 365{ 366 tL2C_CCB *p_serve_ccb; /* current serving ccb within priority group */ 367 tL2C_CCB *p_first_ccb; /* first ccb of priority group */ 368 UINT8 num_ccb; /* number of channels in priority group */ 369 UINT8 quota; /* burst transmission quota */ 370} tL2C_RR_SERV; 371 372#endif /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */ 373 374/* Define a link control block. There is one link control block between 375** this device and any other device (i.e. BD ADDR). 376*/ 377typedef struct t_l2c_linkcb 378{ 379 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 380 tL2C_LINK_STATE link_state; 381 382 alarm_t *l2c_lcb_timer; /* Timer entry for timeout evt */ 383 UINT16 handle; /* The handle used with LM */ 384 385 tL2C_CCB_Q ccb_queue; /* Queue of CCBs on this LCB */ 386 387 tL2C_CCB *p_pending_ccb; /* ccb of waiting channel during link disconnect */ 388 alarm_t *info_resp_timer; /* Timer entry for info resp timeout evt */ 389 BD_ADDR remote_bd_addr; /* The BD address of the remote */ 390 391 UINT8 link_role; /* Master or slave */ 392 UINT8 id; 393 UINT8 cur_echo_id; /* Current id value for echo request */ 394 tL2CA_ECHO_RSP_CB *p_echo_rsp_cb; /* Echo response callback */ 395 UINT16 idle_timeout; /* Idle timeout */ 396 BOOLEAN is_bonding; /* True - link active only for bonding */ 397 398 UINT16 link_flush_tout; /* Flush timeout used */ 399 400 UINT16 link_xmit_quota; /* Num outstanding pkts allowed */ 401 UINT16 sent_not_acked; /* Num packets sent but not acked */ 402 403 BOOLEAN partial_segment_being_sent; /* Set TRUE when a partial segment */ 404 /* is being sent. */ 405 BOOLEAN w4_info_rsp; /* TRUE when info request is active */ 406 UINT8 info_rx_bits; /* set 1 if received info type */ 407 UINT32 peer_ext_fea; /* Peer's extended features mask */ 408 list_t *link_xmit_data_q; /* Link transmit data buffer queue */ 409 410 UINT8 peer_chnl_mask[L2CAP_FIXED_CHNL_ARRAY_SIZE]; 411#if (L2CAP_UCD_INCLUDED == TRUE) 412 UINT16 ucd_mtu; /* peer MTU on UCD */ 413 fixed_queue_t *ucd_out_sec_pending_q; /* Security pending outgoing UCD packet */ 414 fixed_queue_t *ucd_in_sec_pending_q; /* Security pending incoming UCD packet */ 415#endif 416 417 BT_HDR *p_hcit_rcv_acl; /* Current HCIT ACL buf being rcvd */ 418 UINT16 idle_timeout_sv; /* Save current Idle timeout */ 419 UINT8 acl_priority; /* L2C_PRIORITY_NORMAL or L2C_PRIORITY_HIGH */ 420 tL2CA_NOCP_CB *p_nocp_cb; /* Num Cmpl pkts callback */ 421 422#if (L2CAP_NUM_FIXED_CHNLS > 0) 423 tL2C_CCB *p_fixed_ccbs[L2CAP_NUM_FIXED_CHNLS]; 424 UINT16 disc_reason; 425#endif 426 427 tBT_TRANSPORT transport; 428#if (BLE_INCLUDED == TRUE) 429 tBLE_ADDR_TYPE ble_addr_type; 430 UINT16 tx_data_len; /* tx data length used in data length extension */ 431 fixed_queue_t *le_sec_pending_q; /* LE coc channels waiting for security check completion */ 432 UINT8 sec_act; 433#define L2C_BLE_CONN_UPDATE_DISABLE 0x1 /* disable update connection parameters */ 434#define L2C_BLE_NEW_CONN_PARAM 0x2 /* new connection parameter to be set */ 435#define L2C_BLE_UPDATE_PENDING 0x4 /* waiting for connection update finished */ 436#define L2C_BLE_NOT_DEFAULT_PARAM 0x8 /* not using default connection parameters */ 437 UINT8 conn_update_mask; 438 439 UINT16 min_interval; /* parameters as requested by peripheral */ 440 UINT16 max_interval; 441 UINT16 latency; 442 UINT16 timeout; 443 444#endif 445 446#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 447 /* each priority group is limited burst transmission */ 448 /* round robin service for the same priority channels */ 449 tL2C_RR_SERV rr_serv[L2CAP_NUM_CHNL_PRIORITY]; 450 UINT8 rr_pri; /* current serving priority group */ 451#endif 452 453} tL2C_LCB; 454 455/* Define the L2CAP control structure 456*/ 457typedef struct 458{ 459 UINT8 l2cap_trace_level; 460 UINT16 controller_xmit_window; /* Total ACL window for all links */ 461 462 UINT16 round_robin_quota; /* Round-robin link quota */ 463 UINT16 round_robin_unacked; /* Round-robin unacked */ 464 BOOLEAN check_round_robin; /* Do a round robin check */ 465 466 BOOLEAN is_cong_cback_context; 467 468 tL2C_LCB lcb_pool[MAX_L2CAP_LINKS]; /* Link Control Block pool */ 469 tL2C_CCB ccb_pool[MAX_L2CAP_CHANNELS]; /* Channel Control Block pool */ 470 tL2C_RCB rcb_pool[MAX_L2CAP_CLIENTS]; /* Registration info pool */ 471 472 tL2C_CCB *p_free_ccb_first; /* Pointer to first free CCB */ 473 tL2C_CCB *p_free_ccb_last; /* Pointer to last free CCB */ 474 475 UINT8 desire_role; /* desire to be master/slave when accepting a connection */ 476 BOOLEAN disallow_switch; /* FALSE, to allow switch at create conn */ 477 UINT16 num_lm_acl_bufs; /* # of ACL buffers on controller */ 478 UINT16 idle_timeout; /* Idle timeout */ 479 480 list_t *rcv_pending_q; /* Recv pending queue */ 481 alarm_t *receive_hold_timer; /* Timer entry for rcv hold */ 482 483 tL2C_LCB *p_cur_hcit_lcb; /* Current HCI Transport buffer */ 484 UINT16 num_links_active; /* Number of links active */ 485 486#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 487 UINT16 non_flushable_pbf; /* L2CAP_PKT_START_NON_FLUSHABLE if controller supports */ 488 /* Otherwise, L2CAP_PKT_START */ 489 BOOLEAN is_flush_active; /* TRUE if an HCI_Enhanced_Flush has been sent */ 490#endif 491 492#if L2CAP_CONFORMANCE_TESTING == TRUE 493 UINT32 test_info_resp; /* Conformance testing needs a dynamic response */ 494#endif 495 496#if (L2CAP_NUM_FIXED_CHNLS > 0) 497 tL2CAP_FIXED_CHNL_REG fixed_reg[L2CAP_NUM_FIXED_CHNLS]; /* Reg info for fixed channels */ 498#endif 499 500#if (BLE_INCLUDED == TRUE) 501 UINT16 num_ble_links_active; /* Number of LE links active */ 502 BOOLEAN is_ble_connecting; 503 BD_ADDR ble_connecting_bda; 504 UINT16 controller_le_xmit_window; /* Total ACL window for all links */ 505 tL2C_BLE_FIXED_CHNLS_MASK l2c_ble_fixed_chnls_mask; // LE fixed channels mask 506 UINT16 num_lm_ble_bufs; /* # of ACL buffers on controller */ 507 UINT16 ble_round_robin_quota; /* Round-robin link quota */ 508 UINT16 ble_round_robin_unacked; /* Round-robin unacked */ 509 BOOLEAN ble_check_round_robin; /* Do a round robin check */ 510 tL2C_RCB ble_rcb_pool[BLE_MAX_L2CAP_CLIENTS]; /* Registration info pool */ 511#endif 512 513 tL2CA_ECHO_DATA_CB *p_echo_data_cb; /* Echo data callback */ 514 515#if (defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) && (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE)) 516 UINT16 high_pri_min_xmit_quota; /* Minimum number of ACL credit for high priority link */ 517#endif /* (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) */ 518 519 UINT16 dyn_psm; 520} tL2C_CB; 521 522 523 524/* Define a structure that contains the information about a connection. 525** This structure is used to pass between functions, and not all the 526** fields will always be filled in. 527*/ 528typedef struct 529{ 530 BD_ADDR bd_addr; /* Remote BD address */ 531 UINT8 status; /* Connection status */ 532 UINT16 psm; /* PSM of the connection */ 533 UINT16 l2cap_result; /* L2CAP result */ 534 UINT16 l2cap_status; /* L2CAP status */ 535 UINT16 remote_cid; /* Remote CID */ 536} tL2C_CONN_INFO; 537 538 539typedef void (tL2C_FCR_MGMT_EVT_HDLR) (UINT8, tL2C_CCB *); 540 541/* The offset in a buffer that L2CAP will use when building commands. 542*/ 543#define L2CAP_SEND_CMD_OFFSET 0 544 545 546/* Number of ACL buffers to use for high priority channel 547*/ 548#if (!defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) || (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == FALSE)) 549#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (L2CAP_HIGH_PRI_MIN_XMIT_QUOTA) 550#else 551#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (l2cb.high_pri_min_xmit_quota) 552#endif 553 554#ifdef __cplusplus 555extern "C" { 556#endif 557 558 559/* L2CAP global data 560************************************ 561*/ 562#if (!defined L2C_DYNAMIC_MEMORY) || (L2C_DYNAMIC_MEMORY == FALSE) 563extern tL2C_CB l2cb; 564#else 565extern tL2C_CB *l2c_cb_ptr; 566#define l2cb (*l2c_cb_ptr) 567#endif 568 569 570/* Functions provided by l2c_main.c 571************************************ 572*/ 573void l2c_init(void); 574void l2c_free(void); 575 576extern void l2c_receive_hold_timer_timeout(void *data); 577extern void l2c_ccb_timer_timeout(void *data); 578extern void l2c_lcb_timer_timeout(void *data); 579extern void l2c_fcrb_ack_timer_timeout(void *data); 580extern UINT8 l2c_data_write (UINT16 cid, BT_HDR *p_data, UINT16 flag); 581extern void l2c_rcv_acl_data (BT_HDR *p_msg); 582extern void l2c_process_held_packets (BOOLEAN timed_out); 583 584/* Functions provided by l2c_utils.c 585************************************ 586*/ 587extern tL2C_LCB *l2cu_allocate_lcb (BD_ADDR p_bd_addr, BOOLEAN is_bonding, tBT_TRANSPORT transport); 588extern BOOLEAN l2cu_start_post_bond_timer (UINT16 handle); 589extern void l2cu_release_lcb (tL2C_LCB *p_lcb); 590extern tL2C_LCB *l2cu_find_lcb_by_bd_addr (BD_ADDR p_bd_addr, tBT_TRANSPORT transport); 591extern tL2C_LCB *l2cu_find_lcb_by_handle (UINT16 handle); 592extern void l2cu_update_lcb_4_bonding (BD_ADDR p_bd_addr, BOOLEAN is_bonding); 593 594extern UINT8 l2cu_get_conn_role (tL2C_LCB *p_this_lcb); 595extern BOOLEAN l2cu_set_acl_priority (BD_ADDR bd_addr, UINT8 priority, BOOLEAN reset_after_rs); 596 597extern void l2cu_enqueue_ccb (tL2C_CCB *p_ccb); 598extern void l2cu_dequeue_ccb (tL2C_CCB *p_ccb); 599extern void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY priority); 600 601extern tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid); 602extern void l2cu_release_ccb (tL2C_CCB *p_ccb); 603extern tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid); 604extern tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid); 605extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask); 606extern BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb); 607 608extern void l2cu_send_peer_cmd_reject (tL2C_LCB *p_lcb, UINT16 reason, 609 UINT8 rem_id,UINT16 p1, UINT16 p2); 610extern void l2cu_send_peer_connect_req (tL2C_CCB *p_ccb); 611extern void l2cu_send_peer_connect_rsp (tL2C_CCB *p_ccb, UINT16 result, UINT16 status); 612extern void l2cu_send_peer_config_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 613extern void l2cu_send_peer_config_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 614extern void l2cu_send_peer_config_rej (tL2C_CCB *p_ccb, UINT8 *p_data, UINT16 data_len, UINT16 rej_len); 615extern void l2cu_send_peer_disc_req (tL2C_CCB *p_ccb); 616extern void l2cu_send_peer_disc_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 local_cid, UINT16 remote_cid); 617extern void l2cu_send_peer_echo_req (tL2C_LCB *p_lcb, UINT8 *p_data, UINT16 data_len); 618extern void l2cu_send_peer_echo_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 619extern void l2cu_send_peer_info_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT16 info_type); 620extern void l2cu_reject_connection (tL2C_LCB *p_lcb, UINT16 remote_cid, UINT8 rem_id, UINT16 result); 621extern void l2cu_send_peer_info_req (tL2C_LCB *p_lcb, UINT16 info_type); 622extern void l2cu_set_acl_hci_header (BT_HDR *p_buf, tL2C_CCB *p_ccb); 623extern void l2cu_check_channel_congestion (tL2C_CCB *p_ccb); 624extern void l2cu_disconnect_chnl (tL2C_CCB *p_ccb); 625 626#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 627extern void l2cu_set_non_flushable_pbf(BOOLEAN); 628#endif 629 630#if (BLE_INCLUDED == TRUE) 631extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); 632extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); 633extern void l2cu_reject_ble_connection (tL2C_LCB *p_lcb, UINT8 rem_id, UINT16 result); 634extern void l2cu_send_peer_ble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result); 635extern void l2cu_send_peer_ble_credit_based_conn_req (tL2C_CCB *p_ccb); 636extern void l2cu_send_peer_ble_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value); 637extern void l2cu_send_peer_ble_credit_based_disconn_req(tL2C_CCB *p_ccb); 638#endif 639 640extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); 641extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); 642extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); 643 644/* Functions provided by l2c_ucd.c 645************************************ 646*/ 647#if (L2CAP_UCD_INCLUDED == TRUE) 648void l2c_ucd_delete_sec_pending_q(tL2C_LCB *p_lcb); 649void l2c_ucd_enqueue_pending_out_sec_q(tL2C_CCB *p_ccb, void *p_data); 650BOOLEAN l2c_ucd_check_pending_info_req(tL2C_CCB *p_ccb); 651BOOLEAN l2c_ucd_check_pending_out_sec_q(tL2C_CCB *p_ccb); 652void l2c_ucd_send_pending_out_sec_q(tL2C_CCB *p_ccb); 653void l2c_ucd_discard_pending_out_sec_q(tL2C_CCB *p_ccb); 654BOOLEAN l2c_ucd_check_pending_in_sec_q(tL2C_CCB *p_ccb); 655void l2c_ucd_send_pending_in_sec_q(tL2C_CCB *p_ccb); 656void l2c_ucd_discard_pending_in_sec_q(tL2C_CCB *p_ccb); 657BOOLEAN l2c_ucd_check_rx_pkts(tL2C_LCB *p_lcb, BT_HDR *p_msg); 658BOOLEAN l2c_ucd_process_event(tL2C_CCB *p_ccb, UINT16 event, void *p_data); 659#endif 660 661/* Functions provided for Broadcom Aware 662**************************************** 663*/ 664extern BOOLEAN l2cu_check_feature_req (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 665extern void l2cu_check_feature_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 666extern void l2cu_send_feature_req (tL2C_CCB *p_ccb); 667 668extern tL2C_RCB *l2cu_allocate_rcb (UINT16 psm); 669extern tL2C_RCB *l2cu_find_rcb_by_psm (UINT16 psm); 670extern void l2cu_release_rcb (tL2C_RCB *p_rcb); 671extern tL2C_RCB *l2cu_allocate_ble_rcb (UINT16 psm); 672extern tL2C_RCB *l2cu_find_ble_rcb_by_psm (UINT16 psm); 673 674extern UINT8 l2cu_process_peer_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 675extern void l2cu_process_peer_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 676extern void l2cu_process_our_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 677extern void l2cu_process_our_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 678 679extern void l2cu_device_reset (void); 680extern tL2C_LCB *l2cu_find_lcb_by_state (tL2C_LINK_STATE state); 681extern BOOLEAN l2cu_lcb_disconnecting (void); 682 683extern BOOLEAN l2cu_create_conn (tL2C_LCB *p_lcb, tBT_TRANSPORT transport); 684extern BOOLEAN l2cu_create_conn_after_switch (tL2C_LCB *p_lcb); 685extern BT_HDR *l2cu_get_next_buffer_to_send (tL2C_LCB *p_lcb); 686extern void l2cu_resubmit_pending_sec_req (BD_ADDR p_bda); 687extern void l2cu_initialize_amp_ccb (tL2C_LCB *p_lcb); 688extern void l2cu_adjust_out_mps (tL2C_CCB *p_ccb); 689 690/* Functions provided by l2c_link.c 691************************************ 692*/ 693extern BOOLEAN l2c_link_hci_conn_req (BD_ADDR bd_addr); 694extern BOOLEAN l2c_link_hci_conn_comp (UINT8 status, UINT16 handle, BD_ADDR p_bda); 695extern BOOLEAN l2c_link_hci_disc_comp (UINT16 handle, UINT8 reason); 696extern BOOLEAN l2c_link_hci_qos_violation (UINT16 handle); 697extern void l2c_link_timeout (tL2C_LCB *p_lcb); 698extern void l2c_info_resp_timer_timeout(void *data); 699extern void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf); 700extern void l2c_link_adjust_allocation (void); 701extern void l2c_link_process_num_completed_pkts (UINT8 *p); 702extern void l2c_link_process_num_completed_blocks (UINT8 controller_id, UINT8 *p, UINT16 evt_len); 703extern void l2c_link_processs_num_bufs (UINT16 num_lm_acl_bufs); 704extern UINT8 l2c_link_pkts_rcvd (UINT16 *num_pkts, UINT16 *handles); 705extern void l2c_link_role_changed (BD_ADDR bd_addr, UINT8 new_role, UINT8 hci_status); 706extern void l2c_link_sec_comp (BD_ADDR p_bda, tBT_TRANSPORT trasnport, void *p_ref_data, UINT8 status); 707extern void l2c_link_segments_xmitted (BT_HDR *p_msg); 708extern void l2c_pin_code_request (BD_ADDR bd_addr); 709extern void l2c_link_adjust_chnl_allocation (void); 710 711#if (BLE_INCLUDED == TRUE) 712extern void l2c_link_processs_ble_num_bufs (UINT16 num_lm_acl_bufs); 713#endif 714 715#if L2CAP_WAKE_PARKED_LINK == TRUE 716extern BOOLEAN l2c_link_check_power_mode ( tL2C_LCB *p_lcb ); 717#define L2C_LINK_CHECK_POWER_MODE(x) l2c_link_check_power_mode ((x)) 718#else // L2CAP_WAKE_PARKED_LINK 719#define L2C_LINK_CHECK_POWER_MODE(x) (FALSE) 720#endif // L2CAP_WAKE_PARKED_LINK 721 722#if L2CAP_CONFORMANCE_TESTING == TRUE 723/* Used only for conformance testing */ 724extern void l2cu_set_info_rsp_mask (UINT32 mask); 725#endif 726 727/* Functions provided by l2c_csm.c 728************************************ 729*/ 730extern void l2c_csm_execute (tL2C_CCB *p_ccb, UINT16 event, void *p_data); 731 732extern void l2c_enqueue_peer_data (tL2C_CCB *p_ccb, BT_HDR *p_buf); 733 734 735/* Functions provided by l2c_fcr.c 736************************************ 737*/ 738extern void l2c_fcr_cleanup (tL2C_CCB *p_ccb); 739extern void l2c_fcr_proc_pdu (tL2C_CCB *p_ccb, BT_HDR *p_buf); 740extern void l2c_fcr_proc_tout (tL2C_CCB *p_ccb); 741extern void l2c_fcr_proc_ack_tout (tL2C_CCB *p_ccb); 742extern void l2c_fcr_send_S_frame (tL2C_CCB *p_ccb, UINT16 function_code, UINT16 pf_bit); 743extern BT_HDR *l2c_fcr_clone_buf(BT_HDR *p_buf, UINT16 new_offset, UINT16 no_of_bytes); 744extern BOOLEAN l2c_fcr_is_flow_controlled (tL2C_CCB *p_ccb); 745extern BT_HDR *l2c_fcr_get_next_xmit_sdu_seg (tL2C_CCB *p_ccb, UINT16 max_packet_length); 746extern void l2c_fcr_start_timer (tL2C_CCB *p_ccb); 747extern void l2c_lcc_proc_pdu (tL2C_CCB *p_ccb, BT_HDR *p_buf); 748extern BT_HDR *l2c_lcc_get_next_xmit_sdu_seg (tL2C_CCB *p_ccb, UINT16 max_packet_length); 749 750/* Configuration negotiation */ 751extern UINT8 l2c_fcr_chk_chan_modes (tL2C_CCB *p_ccb); 752extern BOOLEAN l2c_fcr_adj_our_req_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 753extern void l2c_fcr_adj_our_rsp_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_peer_cfg); 754extern BOOLEAN l2c_fcr_renegotiate_chan(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 755extern UINT8 l2c_fcr_process_peer_cfg_req(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 756extern void l2c_fcr_adj_monitor_retran_timeout (tL2C_CCB *p_ccb); 757extern void l2c_fcr_stop_timer (tL2C_CCB *p_ccb); 758 759/* Functions provided by l2c_ble.c 760************************************ 761*/ 762#if (BLE_INCLUDED == TRUE) 763extern BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb); 764extern void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len); 765extern void l2cble_conn_comp (UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type, 766 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout); 767extern BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb); 768extern void l2cble_notify_le_connection (BD_ADDR bda); 769extern void l2c_ble_link_adjust_allocation (void); 770extern void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status); 771 772extern void l2cble_credit_based_conn_req (tL2C_CCB *p_ccb); 773extern void l2cble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result); 774extern void l2cble_send_peer_disc_req(tL2C_CCB *p_ccb); 775extern void l2cble_send_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value); 776extern BOOLEAN l2ble_sec_access_req(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator, tL2CAP_SEC_CBACK *p_callback, void *p_ref_data); 777 778#if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) 779extern void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max, 780 UINT16 latency, UINT16 timeout); 781#endif 782 783extern void l2cble_update_data_length(tL2C_LCB *p_lcb); 784extern void l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda, UINT16 fix_cid, 785 UINT16 tx_mtu); 786extern void l2cble_process_data_length_change_event(UINT16 handle, UINT16 tx_data_len, 787 UINT16 rx_data_len); 788 789#endif 790extern void l2cu_process_fixed_disc_cback (tL2C_LCB *p_lcb); 791 792#ifdef __cplusplus 793} 794#endif 795 796#endif 797